Last updated: August 31, 2025
Experience December in Arecibo, Puerto Rico, where warm tropical weather invites you to enjoy the season. With maximum temperatures reaching 31°C (88°F) and a comfortable average of 25°C (77°F), visitors can bask in the sun while the minimum temperature hovers at a pleasant 21°C (71°F) during the nights. However, expect a touch of rain, as December sees about 45 mm (1.8 in) of precipitation over 15 days, contributing to a humidity level of 76% that enhances the lush landscapes. Embrace the vibrant atmosphere that this enchanting destination offers in the heart of winter.
In Arecibo, Puerto Rico, December marks a delightful transition as temperatures begin to cool slightly in comparison to the balmy preceding months. With minimums averaging around 21°C (71°F) and maximums reaching up to 31°C (88°F), December offers a comfortable climate perfect for outdoor exploration. The average temperature settles at 25°C (77°F), providing a pleasant balance for both locals and visitors alike. As the year draws to a close, this month continues the trend of warm weather but introduces a slight dip that makes it a charming time to enjoy the region’s natural beauty and vibrant culture. Whether you're wandering through lush landscapes or basking in the sun, December in Arecibo is an inviting experience that encapsulates the best of island life.
December in Arecibo, Puerto Rico, brings a notable dip in precipitation compared to the previous months, with 45 mm (1.8 in) of rainfall recorded, marking a transition toward drier conditions as the year draws to a close. This month typically experiences 15 days of rain, which is a moderate frequency when contrasted with the wetter fall months, particularly September and October, where precipitation soared to 205 mm (8.1 in) and 161 mm (6.4 in) respectively. The overall trend indicates a gradual decline in rainfall from the intense accumulations of late summer, allowing residents to enjoy cooler, more serene days as the holiday season approaches. Despite the decrease, December still holds a fair share of rain, keeping the lush landscape vibrant and alive.
In Arecibo, Puerto Rico, the humidity levels ebb and flow throughout the year, with December closing out the year at a comfortable 76%. This month maintains a level consistent with late fall, showing only a slight decrease from November's 78%. Observing the trend, one can see that the humidity peaks during the summer months, notably in July and August at 80%, creating a tropical atmosphere. As the seasons transition into fall, humidity begins to taper off slightly, reflecting a gradual shift towards drier conditions as winter approaches. Overall, December offers a pleasing balance, blending the lush, humid summer feel with a hint of the cooler, drier winter months ahead.
In Arecibo, Puerto Rico, December brings a UV Index of 8, categorizing it as very high and indicating a burn time of just 15 minutes. This trend reflects a gradual decrease from the extreme UV levels seen from February through October, which reached a peak of 14 in May. Throughout the year, the UV Index remains notably high, with most months classified as extreme, emphasizing the importance of sun protection. As temperatures rise and winter sunshine persists, residents and visitors alike should remain vigilant. For more detailed insights into the UV conditions throughout the year, check out Arecibo UV Index.
UV Risk Categories
In Arecibo, Puerto Rico, December stands out with 319 hours of glorious sunshine, making it a delightful prelude to the new year. As the year unfolds, sunshine hours steadily increase, peaking in May and July at an impressive 359 hours. The transition from cooler months to the warmth of summer reveals a clear trend: Arecibo enjoys the brightest days in the spring and summer, with sunshine hours typically diminishing as the rainy season approaches in the fall. This consistent abundance of sunshine not only enhances the island's allure but also invites visitors to soak up its vibrant atmosphere during the festive December days.
In Arecibo, Puerto Rico, December boasts a 66% chance of sunny weather, making it a delightful time to bask in the island's warm rays. While the sunniest months, like February at 75%, are just around the corner, December's likelihood of clear skies stands out positively against the wetter summer months. Interestingly, the trend reveals a gradual increase in sunshine, from November's 62% to December's 66%, indicating a promising transition into the drier winter season. This favorable weather pattern makes December an appealing choice for visitors looking to enjoy the beauty of Puerto Rico under the sun.
In Arecibo, Puerto Rico, the daylight duration ebbs and flows gracefully throughout the year, creating a rhythmic cycle that both residents and visitors can rely on. As winter settles in December, daylight extends to 11 hours, mirroring the shorter days of January and February. Following this, the days gradually lengthen, reaching a peak of 13 hours of sunlight in the vibrant summer months of June and July. Then, as September and October roll in, daylight begins to wane again, settling back to 11 hours by November. This consistent pattern of fluctuating daylight not only enhances the island's beauty but also plays a crucial role in shaping daily life and activities throughout the year.
In Arecibo, Puerto Rico, December ushers in a refreshing change with an average wind speed of 4.6 m/s (10 mph), marking a slight uptick from the often calmer months of October and November, which both averaged 3.2 m/s and 3.7 m/s, respectively. This shift reflects a trend where the year's end tends to experience more breezy conditions compared to the summer’s peak, where the winds oscillate between 4.5 to 5.1 m/s. Interestingly, the spring months of April and May exhibit gentler breezes, only reaching up to 4.0 m/s. As the ecosystem begins to prepare for the cooler winter, December's winds coalesce with the region's enchanting charm, creating a pleasant atmosphere perfect for outdoor festivities.
Weather in Arecibo varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Arecibo, focusing on differences in temperature, rainfall, humidity, and UV levels.
December and January exhibit mild temperatures, with December experiencing a slightly warmer range; it has minimums of 21°C (71°F) and maximums of 31°C (88°F), while January features minimums of 18°C (65°F) and maximums of 29°C (84°F). Both months share similar humidity levels at 76%, indicating a tropical atmosphere. Precipitation is also comparable, with December receiving 45 mm (1.8 in) over 15 days and January accumulating 41 mm (1.6 in) across 11 days. For more detailed insights, you can check out Arecibo weather in January.
In comparing the weather between December and February, both months exhibit warm temperatures typical of a tropical climate. December has a minimum temperature of 21°C (71°F) and an average of 25°C (77°F), with a maximum of 31°C (88°F). In contrast, February shows slightly cooler temperatures, with a minimum of 20°C (68°F) and an average of 24°C (76°F), peaking at 30°C (86°F). Precipitation levels are quite similar, with December receiving 45 mm (1.8 in) across 15 days and February slightly higher at 47 mm (1.8 in) over 13 days. Humidity remains consistent, at 76% in December and 75% in February, making both months feel similarly humid. For a more detailed look at February weather, you can check Arecibo weather in February.
In December, the weather is generally warm, with temperatures ranging from a minimum of 21°C (71°F) to a maximum of 31°C (88°F), and an average temperature of 25°C (77°F). The month experiences around 45 mm (1.8 in) of precipitation over approximately 15 days, with a humidity level of 76%.
In contrast, March presents slightly cooler conditions, with temperatures ranging from a minimum of 20°C (68°F) to a maximum of 30°C (86°F) and an average of 24°C (76°F). However, it sees an increase in precipitation to 87 mm (3.4 in) over about 16 days, while humidity is slightly lower at 74%. For more details, check out Arecibo weather in March.
December and April in Arecibo showcase similar average temperatures, hovering around 25°C (77°F), with December experiencing slightly warmer maximums of 31°C (88°F) compared to April's 30°C (87°F). However, December tends to have more days with rain, totaling 15 days and 45 mm (1.8 in) of precipitation, while April sees less rainfall over 13 days, accumulating 79 mm (3.1 in). Humidity levels are comparable, with December's 76% slightly higher than April's 75%. For a more detailed look at April's weather, you can visit Arecibo weather in April.
In December, the weather in Arecibo features temperatures ranging from a minimum of 21°C (71°F) to a maximum of 31°C (88°F), with an average temperature of 25°C (77°F). This month sees about 45 mm (1.8 in) of rainfall over approximately 15 days and humidity levels around 76%. In comparison, May experiences slightly warmer temperatures, with a minimum of 22°C (73°F), an average of 26°C (79°F), and a maximum of 32°C (91°F). Precipitation increases significantly to 98 mm (3.9 in) over 16 days, while humidity remains relatively stable at 75%. For more detailed information, you can check Arecibo weather in May.
In comparing the weather between December and June, we see that both months enjoy warm temperatures, but June tends to be slightly warmer overall. December features a minimum of 21°C (71°F) and an average of 25°C (77°F), while June showcases a slightly higher minimum of 23°C (74°F) and an average temperature of 27°C (80°F). Rainfall is more pronounced in June, with 90 mm (3.5 in) recorded over 14 days, compared to December's 45 mm (1.8 in) over 15 days. Humidity levels are comparable, with December at 76% and June at 77%. For more detailed information, check out Arecibo weather in June.
The weather in December is generally warmer than in July, with average temperatures ranging from a minimum of 21°C (71°F) to a maximum of 31°C (88°F) compared to July's minimum of 24°C (75°F) and maximum of 32°C (90°F). However, July experiences significantly more precipitation, with 91 mm (3.6 in) over 16 days, compared to December's 45 mm (1.8 in) over 15 days. Additionally, humidity levels are slightly higher in July at 80%, compared to December's 76%. For more specific insights, you can check Arecibo weather in July.
In December, the weather is relatively warm, with average temperatures ranging from a minimum of 21°C (71°F) to a maximum of 31°C (88°F), and an overall average of 25°C (77°F). However, it experiences less rainfall, with 45 mm (1.8 in) spread over 15 days and humidity at 76%. In contrast, August tends to be hotter and more humid, with temperatures ranging from a minimum of 24°C (75°F) to a maximum of 32°C (90°F), and an average of 27°C (81°F). Rainfall is more significant in August, totaling 104 mm (4.1 in) across 19 days, and humidity rises to 80%. For a detailed look at August weather, you can check Arecibo weather in August.
When comparing the weather in December and September, we see notable differences in temperature and precipitation patterns. December tends to be slightly cooler, with minimum temperatures around 21°C (71°F) and an average of 25°C (77°F), while September offers warmer conditions with minimums of 24°C (75°F) and an average of 27°C (81°F). Precipitation is significantly higher in September, with 205 mm (8.1 in) of rainfall over 23 days, compared to December's 45 mm (1.8 in) over 15 days. Humidity levels are also relatively high in both months, with December at 76% and September slightly higher at 79%. For a more detailed look at September's weather, you can check Arecibo weather in September.
In comparing the weather of December and October, it is evident that both months experience warm temperatures, but with some notable differences. December tends to be slightly cooler, with average temperatures ranging from a minimum of 21°C (71°F) to a maximum of 31°C (88°F), while October sees slightly warmer conditions, with average temperatures between 23°C (74°F) and 31°C (89°F). Precipitation levels also vary significantly; December receives 45 mm (1.8 in) of rain over about 15 days, whereas October is much wetter, accumulating 161 mm (6.4 in) across 23 days. Humidity remains fairly similar, with December at 76% and October at 78%. For more detailed insights, you can refer to Arecibo weather in October.
In December, the weather is slightly warmer compared to November, with average temperatures ranging from a minimum of 21°C (71°F) to a maximum of 31°C (88°F), while November sees minimums of 22°C (72°F) and the same maximum. Although both months reach similar maximum temperatures, December has a slightly lower average temperature of 25°C (77°F) compared to November’s 26°C (79°F). Precipitation in December is significantly less than in November, with only 45 mm (1.8 in) over 15 days, whereas November experiences 109 mm (4.3 in) of rain across 18 days. Humidity remains relatively high in both months, with December at 76% and November at 78%. For more detailed weather insights, visit Arecibo weather in November.
As December rolls into Arecibo, the weather gently transitions, bringing a mix of warm temperatures and increased rainfall compared to the earlier months. With maximums reaching around 31°C (88°F) and a comfortable average of 25°C (77°F), it's a great time to experience the tropical vibe. However, the month also sees more frequent showers, with precipitation occurring on about half the days, leading to a humid atmosphere that can feel sticky at times. This unique blend of warmth and moisture sets December apart, making it a notable month for both locals and visitors. To delve deeper into the seasonal changes and weather patterns, check out Arecibo Climate.